Carbureter.



M. BUCKER. GARBURBTER.

APPLIcATIoN FILED ocnze, 1907.

1,1 18,917. Patented Dec. 1, 1914 2 SHEETS-SHEET 1.

M BUCKBR.

GARBURETER. APPLIGATION FILED OCT. 26, 1907.

Patented Dec. l, 1914.

2 SHEETS-SHEET 2.

JerZe I Zcer pmvay/S.

f iniciara' STATES PATENT OFFICE.

iraniani; BUGKER, or cHloAeo, ILLINOIS, assreivon To rennais w. PARKER, JB, or

' CHICAGO, ILLINOIS.

cnnsunn'run.

To all whom it may concern.'

- Be it known that I, MERLE BCHER, ya citizen ozi the United States, residing at Chicago, in the county of Cook and State ot Illinois, have invented a certain new and useful Improvement in Carbureters, of which the following is a specificati on.

` My invention relates to carbureters and has for its object to. pro-vide among other things, means fwhereby the carburetor may be self adjusting.

The invention. is illustrated in the :accompanying drawings, wherein- Figure containing my invention; Fig. 2, a. cross section on line 2-2 of Fig. l; Fig. 3, a perspective of the throttling cylinder; Fig. 4, a perspective of the lower controlling cylinder;

Fig. 5, a cross section on line 5-5 of F ig. 1;

Fig. 6, a cross section on line 9-9 of Fig. G. .Like parts are indicated by the same letter in all the figures.

A is the case body which takes the forni of a central annular cup or chamber having the cross connection A1, the annular float A2 connected at one side by the bolt A3 with the l bar A4 pivoted atA in a lateral projection A of the central case body. B is a supply valve mounted on the bar A4 and passing through a projection B1 on the case body cover B2. This latter is provided with a series of apertures B3 about the valve B, opening at their upper ends into thechamber B4. The valveB abuts upon the lower end of the connection A1.

C5 is a stutling box whereby a tight joint is made, and CG is a Vhand wheel on the. lower 'end of the valve stem CT. By operating the hand wheel C6 the needle valve can he set in any desired relation to' the opening C1,

- and since the needle valve case C opens into the connecting pi e A1 the Aasolene will normally stand. 'at t 1e. same eight aboutv the specicatcu of Letters Patent.

l is a "vertical section of a device.

Patented Dec.. 1, igfio Application filed October 26, 1907. Serial No. 399,239-.

needle valve as it stands in the annular ugasolene receptacle of the case body A. v

On the lower part of the case is an annu-h lar flange D into which is' screw threaded the casing D1 into which leads the air supply pipe D2. E is a similar smaller annular flange on the bottoni ot the case body A and into which is screw threaded the lower con trolling` cylinder which consists of the screw threaded ring El at the top, the bottom E2 with the perforations E3 and the internally; screw threaded aperture E* and the vertical connecting pieces E5, between which are the vertical slots E10, EN. In the forni; shown in Fig. d, there are four Otthese vertical slots. This lower cylinder is screwed into the desired position and fixed in place by the set screw Returning to the top of the device. we note a central cylindrical part F which forms the inner part of the annular gasolene f chamber in the case body and projects above the central aperture in the cover B2 thereof. it screw threaded and receives the screw threaded portion .F1 within which is formed a chamber, and into which is screw threaded the discharge pipe F2. This part F has vertically ppc' cting portions F3, with intermediate vertidl slots Ft. and, in

fact, constitutes the upper controlling cylinder,

The inner thrott-hng cylinder is shaped as shown. The throttle device comprises several elements'. lt has a downwardly projecting distributing plate G connected to the cylinder proper which is provided with a series of long Vertical slots G1, lateral slots G2 in the vertical slot to receive vthe cross connection Aj, and short .vertical slots. G3. The cylinderlis closed below by a. plate G4 w iich is perforated below at G5, and has a downwardly projecting reduced cylindrical portion G6 associated with a set screw GT' whereby it may be secured to the hub GS on the throttling .lever G9. The plate G* is directed upwardly as shown, and is open at itsupper end to inclose the'. depending cylinder Gr10 on the cross connection A1. This cylindrical portion G10 connects with the cylindrical portion G11 above the cross connection Also as to 'make a vertical pas.-A

sageway surrounding the needle valve casing. There is, therefore, a connection from theairsupply pipe'through the apertures Ei t) casing F1 have been closed. i

J is a collar on the cylindrical part Gr provided with the controlling handle J1 and screw threaded at J2 to be received into the screw threaded part E4. By turning this screw threaded collar, the throttling cylinder and its associated parts may be raised or lowered for thel lower controlling cylinder is fixed rigidly in position by the set screw EG. When the thiottling cylinder has reached the proper position it is locked by the set screw J3. It is, however, free to rotate on its vertical axis. yThis is accomplished'by operating the throttle lever G9 which carries with it ythe cylinder G and the throttling cylinder' 'and its associated parts.l A v y This apparatus involves a method or process of producing a mixture suitable for use in internal combustion engines and the feed is responsive to variations inthe vacuum in such mixing chamber, such varia-tion in the vacuum being itself responsive to the demands of the engine. v l

In operation the parts are adjusted as above described and the air inlet and iniX-' tureouvtlet openings set, whereupon a varying vacuum 1n the mixing chamber will. re

-sult in such an intake of airand oil as will varythe richness of the mixture to'correspond to the necessities of the engine.

Preferably whenthe engine is under a hea i/,y

load t e intake-and dischargeports will' be y so adjusted that while thetotal supply of mixture will increase, the richness thereof will be lessened, and as the load decreases the ,total supply ofinixture will be decreased but the richness thereof increased This result is desirable, because when the throttle is wide' openjor a high load a larger amount of mixtureis admitted to the engine on the vintake stroke and therefore the compression is' greater and a Yless rich mixture is needed "to mali-e a combustible charge and give the desired amount -opowenwhereas when the throttle is closed on low load a lesser amount of mixture/is admitted to the engine and the compression is therefore less and a richer mixture-needed to give a satisfactory con1- bustible charge in the engine. ln practice it works' out thatfor high loads the vacuum in the'engine usually increases, and since a weaker mixture isi-satisfactory the carbureterv is so adjusted. that the vacuum therein decreases, thus` feeding less fuel in propor- 4 tion tothe amount of air, whereas for low loads thevacuum in the engine decreases and the .vacuum in thecarbureterwill increase, thus feeding more fuel in proportion to the air.

`The use and operation of my 'invention are as follows: Assuming that the parts are arranged as shown in Fig. l, and that they have been properly set by fixing the cylinder in position and securing it there by the setscrew E, the action of the engine is to draw themixed fluids out at the'ltop in the direction indicated by the arrows. This, however, means that the air is being drawn into the bottom, as indicated by the arrow, and the gasolene into. the gasolene tank and out at the needle valve, 'as indicated by the arrows. It now, the operator desires to vary'the he may do so by operating the lever G which will rotate the lthrottling cylinder, and-by rotating it on the other cylinder, will tend to vary the area of the passageway through their respective vertical slots. The vertical slots El in the fixed lower cylinder are those regulated by the vertical slots G in the throttling cylinder, while in like manner the vertical slots F4 are also so regulated: This variation, however, ,takes place both above and below the needle valve, or in other words, on both sides of the point 0i' gasolene delivery and this tends to vary the vacuum. Experienceshows that where.` the air is drawn `in at a certain pressure, Jfor example below the needle valve, and discharged at aw dilerentpressure above, .the action ofthe needle valve touching the supply ofgasolene therethrough, does not vary proportionally with the variation in the sup ply of the air. lt is part of my invention, therefore, to control simultaneously and variably the passageways which lead into the chamber about the needle valve and the passage-ways which lead out ofthe chamber above the needle valve for the purpose of se' curing af variable vacuum. By -turning the throttle valve handle far enough the vertical slots E10 and lit-may be closed, whereupon a slight -supply of air, as previouslyexplained,

' will pass up through the holes E3. E5 about the needle valve and into the chamber-above it, andfthcnce out above the uppei.part of the spreading plate G. lIr" the engine wor is irregularly for any reason so as certainly to require. more gasolene while itis working slowly the effect will be as follows: The y slowing' down of the engine will increase the supply of air and reduce the tendency of the gasolene to How out of the needlevalve and, therefore, the flow of gasolene/will tend to increase. The size and relation of these several slots and the positions to which the parts are to be brought for the fixed adjustments, are ofcourse-variable and must be determined for each particular engine vand for the yconditions under which it is to be operated. My drawings are, therefore, to be taken as diagrammatic and simply as inisc tended to illustrate in a general Way the application Of my invention, but its particular application in-any given case would have to be Worked out and adjustments would have to be made by some person competent to make such adjustments.

In order to obtain a relative area of outlet and inlet passages for all positions of the throttle and speed of the' engine, suchr that the. discharge from the needle valve may insure a. proper explosive mixture, one set 'of ports in Fig. l is made independently adjustable by rotating the lower cylinder to any desired position. Thismay bring the upper and lower. slots in the exterior cylinder more or less out of line. Generally speaking, therefore, the device discloses means for initially varying or adjustingthe ports, these means being independent of the action of the engine and preferably adapted, and as here shown actually adapted, to vary the effective areasof the ports in opposite directions, thus varying the relative proportions of their areas. These means preferably operate simultaneously and cooperate with the throttling means which, as here illustrated in its preferred form, adjust simultaneously the effective areas of the ports preferably by increments of a uniform rat-io. The means for varying the effective areas of the ports in opposite directions, contains the threaded collar J 2 which is adapted to cause the cylinder G1 to move back and forth in its bearings and thereby to change the area 0f the ports above and below the liquid res-v ervoir.

I claim:

1. InaJ carbureter the combination of a liquid discharge valve with an air passageway into which the same opens, an inlet to the passagewayv on one side of the valve and an outlet on the other, throttling means for simultaneously varying their effective areas and additional means operative at right angles to said throttling means for adjusting their effective areas.

Q. In a carbureter the combination of a liquid discharge valve With an air passageway into Which the same opens. an inlet to the passageway on one side of the valve and an outlet on the other, throttling means for simultaneously varying their effective areas in the same direction. and additional means for simultaneously adjusting their edective areas oppositely.

3. In a carbureter the combination of a liquid discharge valve with an air passage- Way into which the slime opens. an inlet to 'liquid discharge valve with an air passage the passageway on one side of the valve au? an outlet on the other, throttling means im@ simultaneously varying their effective are4 and additional means for simultaneously a: justing their effective areas oppositely.

4. In a carbureter the combination of way into which the same opens. an inlet tu the passageway on one side of the valve anu an outlet on the other. throttling means for simultaneously varying their effective areas by increments of uniform "atie, and additional means for simultaneously adjusting their effective areas oppositely.

6. vIn a carbureter, the combination of a liquid discharge valve with an air passageway into which the same opens. an inlet to the passageway on one side of the valve and an out-let on the other, throttling means for simultaneously varying their effective areas in the same direction by increments of uni-- form ratio, and additional means for simultaneously adjusting their effective areas oppositely. Y

7. In a carbureter the combination of a liquid discharge valve with an air passageway into which the same opens, an inlet to the passageway on one side of the valve and an outlet on the other, throttling means foi1 simultaneously varying their e'ective areas by increments of `uniform ratio. and additional means for adjusting their effective.

areas oppositely. said additional means manually operative.

rif:

8. In a carbureter the combination of a.

MERLE BUCKER. Witnesses:

SOPHIE B. IVERNER, CHAs. M. GARDNER. 

